Improvement in fastenings for sheet-metal couplings



C. P. HENIS. Fastening 4for Sheet-Metal Coupling.

No. 213,901. Patented April 1, 1879.,

WITNESSES-- A 1N VENTO/e i A .fg/@M 1 i PETERS PHOTO-LITHOGRAPHEK.wASHlNmoN, D C.

UNITED STATES PATENT OFFICE.

CHARLES F. HENIS, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT` IN FASTENINGS FOR SHEET-METAL-COUPLINGS.

Specification forming part of Letters Patent No. 213,901, dated April 1,1679 application filed March 7, 1878.

To all whom it may concern:

Be it known that l, CHARLES F. Ennis, of the city and county ofPhiladelphia, in the State of Pennsylvania, have invented certain newand useful Improvements` in Fastenings for Sheet-Metal Couplings, ofwhich the following` is a specification:

My invention, which is specially designed for use on couplings forconnecting the sections of sheet-metal pipes, but which is likewiseapplicable to other connecting bands or clasps, is an improvement uponthat for which Letters Patent of the United States No.

166,989 were granted and issued to me under date of August 24, 1875.

The object of my present invention is to provide a lock or fastening inthe operation of which no side or twisting motion will be` imparted toeither end of the coupling-band` to which it is attached, and by whichsaid ends will be either moved and held tirmly together or slackened orentirely released, one from the other, at pleasure, their movement beingalways circumferential or endwise, so as to prevent cramping or bindingon the sections which they connect, or distortion of the coupling-band.

To this end my improvements consist in the combination of an eccentricor cam pivoted to a bearing-plate fixed upon one end of thecoupling-band and a loop or eye pivoted to the other end thereof in linecircumferentially or endwise with the pivot of the eccentric, and havingtransverse ribs or arms, as hereinafter more fully set forth.

In the accompanying drawings, Figure 1 is a plan or top view of afastening embodying my improvement, the ends of the couplingband beingshown disconnected; and Figs. 2 and 3 are, respectively, a verticallongitudinal central section and a plan view of the same, with the endsof the band connected.

Myimproved fastening is shown as applied for connecting the ends of asheet-metal coupling-band, A, which may serve either as a pipe-couplingor be used for other purposes. A bearing-plate, B, is secured by rivetsbb' to the band A, near one of its ends, and a cam or eccentric, B', ispivoted to the outer end of the plate B by the rivet b. Notches orrecesses are formed in the eccentric to receive a key by which it may beturned. A loop or eye. C, is pivoted to the opposite end of the band Aby a rivet, e, which is in line circumferentially, or in the directionof the strain sustained by the coupling-band in exerting its clampingaction, with the pivot b of the eccentric B'. Transverse ribs or arms c'are formed upon the loop C, to provide increased bearing upon the endsof the band A and hold down the latter more firmly when the fastening islocked.

In the operation of the fastening, the parts being in the position shownin Fig. l, the two ends of the band A are moved together until the loopC is slipped over the eccentric B', When the latter is turned into theposition shown in Figs. 2 and 3, drawing and holding the ends of theband A firmly together. The loop C, being free to move on its pivot o,follows the movement of the eccentric B', as shown in dotted lines inFig. 3, without imparting lateral movement to the end of the band towhich it is attached, and cramping or Vdistortion is consequentlyavoided by insuring .and for the purpose set forth.

CHAS. F. HENIS. Witnesses:

J. SNOWDEN BELL, CEAS. F. PIKE.

